Trees for Cars is a mobile application that aims to save the environment by helping users carpool to their destinations, and Grand programmed the entire thing himself from the streets of Manhattan with just 16 weeks of coding lessons.

It also provides information on how much CO2 the user is saving with each ride which further encourages environmental awareness, creating within the app a healthy competition amongst users to save the most CO2.

In August, Grand was approached by Patrick McConlogue, a developer at educational search engine Noodle with an offer: $100 cash or two months of coding lessons for an hour daily

Grand chose the lessons and after more than three months of work—a time that included having a laptop confiscated by police, getting workspace donated from Noodle founder and Princeton Review founder John Katzman, and taking up five weeks worth of a Noodle employee's time—the app is now for sale.